NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days
8X8, INC. 38
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 732-974 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 SPRINGLAKE NJ
— 732-975 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 HOLMDEL NJ
— 732-976 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NJ
— 732-977 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 MIDDLETOWN NJ
— 732-978 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 RED BANK NJ
— 732-979 2XXX which blocks → METROPCS, INC. 5562 NEWBRNSWCK NJ
— 732-980 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 BOUNDBROOK NJ
— 732-981 none assigned yet which blocks → VERIZON NEW JERSEY, INC. 9206 DUNELLEN NJ
— 732-982 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 EATONTOWN NJ
— 732-983 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 METUCHEN NJ
— 732-984 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FREEHOLD NJ
— 732-985 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 NEWBRNSWCK NJ
— 732-986 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 METUCHEN NJ
— 732-987 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 LAKEWOOD NJ
— 732-988 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 ASBURYPARK NJ
— 732-989 not yet reported which blocks → SPOK, INC. 6630 BOUNDBROOK NJ
— 732-990 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 XXXXXXXXXX NJ
— 732-991 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 NEWBRNSWCK NJ
— 732-992 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F JAMESBURG NJ
— 732-993 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 NEWBRNSWCK NJ
— 732-995 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 FREEHOLD NJ
— 732-996 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 LONGBRANCH NJ
— 732-999 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 XXXXXXXXXX NJ
— 734-200 not yet reported which blocks → MI
— 734-205 7XXX8XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 ANN ARBOR MI
— 734-206 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E TEMPERANCE MI
— 734-207 not yet reported which blocks → MICHIGAN BELL TEL CO 9323 PLYMOUTH MI
— 734-208 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 FLAT ROCK MI
— 734-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 734-212 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLCV - MI 543C MANCHESTER MI
— 734-213 not yet reported which blocks → MICHIGAN BELL TEL CO 9323 ANN ARBOR MI
— 734-214 not yet reported which blocks → MICHIGAN BELL TEL CO 9323 ANN ARBOR MI
— 734-215 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MILAN MI
— 734-216 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
— 734-218 7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 YPSILANTI MI
— 734-220 0XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PETERSBURG MI
— 734-222 not yet reported which blocks → MICHIGAN BELL TEL CO 9323 ANN ARBOR MI
— 734-223 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ANN ARBOR MI
— 734-226 not yet reported which blocks → SPOK, INC. 6630 YPSILANTI MI
— 734-227 not yet reported which blocks → SPOK, INC. 6630 MONROE MI
— 734-229 8XXX which blocks → MICHIGAN BELL TEL CO 9323 ROMULUS MI
— 734-230 2XXX6XXX7XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J MONROE MI
— 734-231 none assigned yet which blocks → METROPCS, INC. 5562 TRENTON MI
— 734-234 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J TEMPERANCE MI
— 734-236 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → PAETEC ITEL, LLC 829J ROCKWOOD MI
— 734-237 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J LIVONIA MI
— 734-238 2XXX3XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 WAYNE MI
— 734-239 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ANN ARBOR MI
— 734-240 not yet reported which blocks → MICHIGAN BELL TEL CO 9323 MONROE MI
— 734-241 not yet reported which blocks → MICHIGAN BELL TEL CO 9323 MONROE MI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.